Automatic liquid-fuel dispenser



March 18, 1930. c HY 1,751,073

AUTOMATIC LIQUID FUEL DISPENSER Filed March 28, 1928 INVENTOR I ATTORNEYPatented Mar." 18, 1930 N T D STATES PATENT OFFICE CHARLES BRAHY, OFBROOKLYN, NEW YORK, AS SIGNOR TO CHARLES i NEW YORK, 11'. Y.

n. Eamon, or.

A'UTOMA'1IC' LIQUID-FUEL DISPENSER Application and March as, 1928.Serial No. 265,257.

This invention relates to a liquid fuel dispenser of the type operatedby a coin-actuated mechanism; the object being to provide a machine thatwill automatically dispense a given quantity of liquid fuel, such asgasoline, by

the insertionof a coin into a slot in the machine. Another object is toprovide means to prevent the operation of the machine by a coin otherthan that of'a predetermined denomination. A-further object of thisinven tion is to provide adjusting means, in a machine of this class, tovary the quantity of fuel dispensed, in accordance with pricefluctuations, and to render the machine adaptable to 16 be set fordispensing difierent quantitiesof fuel for difierent coins.

Referring to the drawings: Figurel. is a 'front sectional elevation ofthe apparatus constituting the'invention.

Figure 2 is 'an enlarged fragmentary sectional' elevation of thecoin-operating mechamsm. V

In the drawings, 1 represents the coin-slot communicating with the chute2, which is 25 positioned over the temporary coin recepta cle 3. Thisreceptacle is pivotally connected at 4, and is yieldably held againstrotation by the hair spring 5. 'The balanced support 6, mounted on plvot7 has fitted thereon the hair spring 8, adjusted to yieldably hold saidsupport against rotation. The arm 9 is fixed to pivot 7, and contains aslot 10 within which is slidably positioned the pin 11 secured tothelink 12. The arm 13 of the levermounted on shaft 14 is pivotallyattached to the link 12, and the arm 15 is pivotally attached to thetripper rod 16. Over this rod is the helical spring 17 positioned withincompartment 18.

the said tripper rod is pivotally attached. to the lever 19 which ispivotally mounted at 20, one arm of the said lever being pivotallyattached to the link 21 which is connected to the arm 22 of the meter23; the other arm of the said lever 19 being positioned near the wheel24 on which the tripper finger25 is suitably fixed.. Y I v The electricmotor 26 is connected to 'pulley 27. by the belt 28', the shaft 29vofsaid ulleycont-aim'ng a pinion the teeth of w ich 50 are in engagementwith those on the wheel 24.

. the outlet openings 49 and 50 communicate,

-tively, the said contact point 57 being atcoin causes the said recetacleto swing downwards, in a clockwise v pivot 4, against the action ofthe sprm' 5,-

The wheel 24 is mounted on shaft 30 which is supported by'the bearing 31mounted on the support 32 which is suitably secured to the housing 33.The wheel'24 is rovided with the slot 34 within which is slida ly fittedthe pin 35 which is provided with means to immovably hold said pin inany predetermined position within said slot. One end 36 of theconnecting rod 37 is mounted-on the pin 35, the other end 38being'pivotally connected at'39 to the piston rod 40 of the pum plunger41. The gasket 42, positionedaroun the periphery of the 'said plunger,is fitted thereon in such manner as to allow a proper slidin movement ofthe plunger'within the cylin er 43. The fuelsupply pipe 44 communicateswith inlet openin s 45 and 46 through'the one-way valves 4 and 48; and

through one wa'y'valves 51 and 52, with the hose 53. I

Two electric conductors 54 and 55 lead from a main source of currentsupply 56 to the motor 26 and the contact pomt 57 respectached to thespring 59 and to the magnet 60 of the solenoid 61; Adjacent to said pomt57 is the contact point 58 which is electrically connected, by conductor62, to the motor 26.

Thesolenoid 61 is electrically connected, by line 63, to the auxiliarysource of current supply ,64,-and by line 65 to contact point 66, whichis secured to the said' support 6. The contact'point 67, secured to thesaid rece tacle 3, is electrically connected, through con uctor 69,t'ossaid auxiliary source of current supply 64. The lamp is connected,by electric conductors 7 2- and 73, to the line 63 and the contact point68, which is in contact with the point 67 when the apparatus is 1n 1tsnormal starting position.

temporary receptacle 3. The weight ofthe until the contact .point' 67comesinto a utment with contact point 66, thesprmg 7 be,-

ing adjusted to enable the support 6 to up- Ieo Whenacom 1s depositedinto slot 1, it slides down the chute 2 and is deposited into the o5rection, around the Y pulley 27, wheel 24, connecting rod 37, and

pis..on rod 40. I

As the wheel 24 completes a revolution, the tripper 'finger 25 trips thelever 19, thereby causing the rod 16 to move in thedirection of thearrow and causing the'link 12 to move upwards. This causes the arm 9 andconsequently the pivot 8 to rotate in a. counterclockwise direction,carrying with it the support 6. The'receptacle 3 is now allowed tocontinue on its downward course, swinging about the pivot'4 until thecoin 77 is dropped through the chute 74 into the coin box 7 '5.

When the receptacle 3 is thus relieved of the weight of the coin, thespring'5 will carry the saidreceptacle back to its starting position,thereby causing the contacts 66 and 67 ,.to separate. This breaks thecircuit through the solenoid 61,'and consequently cuts oil the currentthrough the motor, whereby the machine is brought to a stop.

When the machine is not in operation, the

contacts 67 and 68 are inabutment, so that the current fromzthcsource 64keeps the lamp lighted.' As soon asa coin is deposited with-.

in the receptacle 3, and it begins to swing downwards due to the weighttherein, the contacts 67 and 68 are separated, shutting off the currentthrough the lamp, thereby indicating that the machine is in operation;

If a coin smaller than that of the predetermined denomination is deosited, it will drop down through the space between 78 and 79, and intothe coin box, without operating the machine.

The spring is adjusted so that it will not yield under the weight of acoin-that is lighterthan a coin of a predetermined denomination. If theweight is greater, the receptacle 3 will swing downwards as before, butthe added weight will cause the support 6 to swing downwards also,around the pivot 8,, as the spring 7 is adjusted to hold no more.thanthe weight of the proper coin. The receptacle 3 will continue toswing downwards until the coin drops down into the chute 74 and? intothe coin box 75; and the said receptacle, now being relieved of theweight of the coin, willreturn to its normal position. 7 When thecontacts66 and 67 are thus momentarily brought into contact, the circuitthrough the solenoid 61 is closed, but it is broken again before theslow-moving magnet 60 establishes contact 'between points 57 and 58, andin this way preventing the motor from operating.

, If there is but one tripper finger on the wheel 24, the plunger 42will make one up and one down stroke, thereby supplying a correspondingamountof fuel through the hose 53. But if another'tripper finger 76 issecured to the wheelfl24 diametrically opposite finger'25, the trippingaction will take -'place every half a revolution of the wheel 24, sothatthe plunger will make either one up or one down stroke-for each coindeposited. In this way the machine can be set for a coin of a. givendenomination, or for one of half that denomination. i

Each tripping action will simultaneously operate the tripping rod 16,and. the meter 23 through the link 21 and arm 22. This meter will thusindicate the number of coins deposited, thereby serving as a check-up.

To make an adjustment for fluctuating fuel prices, the pin can be fixedanywhere along the slot 34, thereby varying the length of stroke of theplunger 41, and in this Way controlling the amount of fuel suppliedpercoin deposited. The one-way valves 47, 48,

51, and 52 permit a unidirectional flow of fuel from the main supplypipe 44 to the hose 53. o

.The drawingsand description herein refer to but one of severaldifferent mechanical.

forms and constructions that may be embodied in my design.

What I claim is 1. In an automatic liquid fuel dispenser of .the classdescribed a coin-operated control box comprising, in combination, 1 acoin-deposit slot communicating with a chute terminating above atemporary coin receptacle having an electric contact point attachedthereto; an intermediate releasable support for said receptacle, thesaid support having another electric contact point attached thereto;said receptacle being provided with means to enable the weight of a coindeposited therein to cause a downward movement of said receptacle untilit comes into abutment with and bringing said points into contact witheach other; means to trip said releasable support and remove it from itsposition where it upholds said receptacle, thereby separating saidcontact points and at the same time allowing said receptacle to continueon its downward course until the coin therein is caused to drop into asuitably positioned coin box; and means to bring said'receptacle andsaid supportback to their starting positions. '2. In an automatic liquidfuel dispenser of the class described 'a coin-operated control boxcontaining a'coin deposit slot communieating with a chute terminatingabove a pivotally connected coin receptacle provided with means toyieldably hold said receptacle against rotation; a pivotally connectedinterrests upon said releasable support. thereby mediate supportprovided with balancing means to yieldably hold said support againstrotation, the said support being positioned with respect to the saidreceptacle in such manner that when said receptacle is caused to rotateabout its pivot due to the weight of a coin deposited therein, one endthereof will come into contact with and rest upon said support, the saidbalancing means being adjusted to cause said support to ield when thecoin within the superimpose receptacle is of greater than apredetermined weight, thereby releasing said receptacle from its supportand permitting it to continue on its downward course until the cointherein is caused to drop into a suitably positioned coin box.

3. In an automatic liquid fuel dispenser of the class described amotor-driven liquid fuel pump; a pair of adjacent contact points inseries with the motor of said pump and a main source of current supply;electro-mechanical means mechanically connected to said contact pointsand provided with slow-operating means adapted to gradually bring saidpoints i into contact with each other; a yieldably supported andbalanced coin receptacle; means to cause sa1d receptacle, when a coin isdeposited therein, to close the circuit through said electro-mechanicalmeans; "and means to cause the said balanced receptacle, when the coindeposited therein is of greater than a predetermined weight, to breakthe circuit through said electro-mechanical means before a saidslow-operating means bring the said points into contact.

In witness whereof I afiix m signature. CHARLE BRAHY.

